"Appear stage" is a phrase that could refer to a person or thing making a public appearance or stepping onto a platform or stage. There are many synonyms for this phrase that could be used depending on the context, such as "emerge," "present," "display," "reveal," or "showcase." Other synonyms might include "perform," "demonstrate," "exhibit," or "unveil." Each of these words emphasizes different facets of what it means to step onto a stage, whether it's to demonstrate a skill, reveal something new, or showcase one's talents. By choosing the right synonym, you can add nuance and flavor to your language, making your writing more interesting and dynamic.